Zobrazeno 1 - 10
of 269
pro vyhledávání: '"Vives, G."'
Autor:
Nogueira, P. H., Lazzoni, C., Zurlo, A., Bhowmik, T., Donoso-Oliva, C., Desidera, S., Milli, J., Pérez, S., Delorme, P., Fernadez, A., Langlois, M., Petrus, S., Cabrera-Vives, G., Chauvin, G.
Publikováno v:
A&A 687, A301 (2024)
$\eta$ Tel is an 18 Myr system with a 2.09 M$_{\odot}$ A-type star and an M7-M8 brown dwarf companion, $\eta$ Tel B, separated by 4.2'' (208 au). High-contrast imaging campaigns over 20 years have enabled orbital and photometric characterization. $\e
Externí odkaz:
http://arxiv.org/abs/2405.04723
Autor:
Cabrera-Vives, G., Moreno-Cartagena, D., Astorga, N., Reyes-Jainaga, I., Förster, F., Huijse, P., Arredondo, J., Arancibia, A. M. Muñoz, Bayo, A., Catelan, M., Estévez, P. A., Sánchez-Sáez, P., Álvarez, A., Castellanos, P., Gallardo, P., Moya, A., Rodriguez-Mancini, D.
Publikováno v:
A&A 689, A289 (2024)
The advent of next-generation survey instruments, such as the Vera C. Rubin Observatory and its Legacy Survey of Space and Time (LSST), is opening a window for new research in time-domain astronomy. The Extended LSST Astronomical Time-Series Classifi
Externí odkaz:
http://arxiv.org/abs/2405.03078
Autor:
Sánchez-Sáez, P., Arredondo, J., Bayo, A., Arévalo, P., Bauer, F. E., Cabrera-Vives, G., Catelan, M., Coppi, P., Estévez, P. A., Förster, F., Hernández-García, L., Huijse, P., Kurtev, R., Lira, P., Arancibia, A. M. Muñoz, Pignata, G.
Publikováno v:
A&A 675, A195 (2023)
We present a variability, color and morphology based classifier, designed to identify transients, persistently variable, and non-variable sources, from the Zwicky Transient Facility (ZTF) Data Release 11 (DR11) light curves of extended and point sour
Externí odkaz:
http://arxiv.org/abs/2304.08519
Publikováno v:
A&A 670, A54 (2023)
Taking inspiration from natural language embeddings, we present ASTROMER, a transformer-based model to create representations of light curves. ASTROMER was pre-trained in a self-supervised manner, requiring no human-labeled data. We used millions of
Externí odkaz:
http://arxiv.org/abs/2205.01677
Autor:
Sánchez-Sáez, P., Lira, H., Martí, L., Sánchez-Pi, N., Arredondo, J., Bauer, F. E., Bayo, A., Cabrera-Vives, G., Donoso-Oliva, C., Estévez, P. A., Eyheramendy, S., Förster, F., Hernández-García, L., Arancibia, A. M. Muñoz, Pérez-Carrasco, M., Sepúlveda, M., Vergara, J. R.
Publikováno v:
AJ 162 206 (2021)
The classic classification scheme for Active Galactic Nuclei (AGNs) was recently challenged by the discovery of the so-called changing-state (changing-look) AGNs (CSAGNs). The physical mechanism behind this phenomenon is still a matter of open debate
Externí odkaz:
http://arxiv.org/abs/2106.07660
In the new era of very large telescopes, where data is crucial to expand scientific knowledge, we have witnessed many deep learning applications for the automatic classification of lightcurves. Recurrent neural networks (RNNs) are one of the models u
Externí odkaz:
http://arxiv.org/abs/2106.03736
Autor:
Martínez-Marín, M., Demarco, R., Cabrera-Vives, G., Cerulo, P., Leigh, N. W. C., Herrera-Camus, R.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 499, 2020, Issue 4, pp.5607-5622
We propose a phylogenetic approach (PA) as a novel and robust tool to detect galaxy populations (GPs) based on their chemical composition. The branches of the tree are interpreted as different GPs and the length between nodes as the internal chemical
Externí odkaz:
http://arxiv.org/abs/2011.06950
Autor:
Förster, F., Cabrera-Vives, G., Castillo-Navarrete, E., Estévez, P. A., Sánchez-Sáez, P., Arredondo, J., Bauer, F. E., Carrasco-Davis, R., Catelan, M., Elorrieta, F., Eyheramendy, S., Huijse, P., Pignata, G., Reyes, E., Reyes, I., Rodríguez-Mancini, D., Ruz-Mieres, D., Valenzuela, C., Alvarez-Maldonado, I., Astorga, N., Borissova, J., Clocchiatti, A., De Cicco, D., Donoso-Oliva, C., Graham, M. J., Kurtev, R., Mahabal, A., Maureira, J. C., Molina-Ferreiro, R., Moya, A., Palma, W., Pérez-Carrasco, M., Protopapas, P., Romero, M., Sabatini-Gacitúa, L., Sánchez, A., Martín, J. San, Sepúlveda-Cobo, C., Vera, E., Vergara, J. R.
We introduce the Automatic Learning for the Rapid Classification of Events (ALeRCE) broker, an astronomical alert broker designed to provide a rapid and self--consistent classification of large etendue telescope alert streams, such as that provided b
Externí odkaz:
http://arxiv.org/abs/2008.03303
Autor:
Sánchez-Sáez, P., Reyes, I., Valenzuela, C., Förster, F., Eyheramendy, S., Elorrieta, F., Bauer, F. E., Cabrera-Vives, G., Estévez, P. A., Catelan, M., Pignata, G., Huijse, P., De Cicco, D., Arévalo, P., Carrasco-Davis, R., Abril, J., Kurtev, R., Borissova, J., Arredondo, J., Castillo-Navarrete, E., Rodriguez, D., Ruz-Mieres, D., Moya, A., Sabatini-Gacitúa, L., Sepúlveda-Cobo, C., Camacho-Iñiguez, E.
We present the first version of the ALeRCE (Automatic Learning for the Rapid Classification of Events) broker light curve classifier. ALeRCE is currently processing the Zwicky Transient Facility (ZTF) alert stream, in preparation for the Vera C. Rubi
Externí odkaz:
http://arxiv.org/abs/2008.03311
Autor:
Peña, J., Fuentes, C., Förster, F., Martínez-Palomera, J., Cabrera-Vives, G., Maureira, J. C., Huijse, P., Estévez, P. A., Galbany, L., González-Gaitán, S., de Jaeger, Th.
Publikováno v:
The Astronomical Journal, Volume 159, Number 4, Page 148, Year 2020
We report the observations of solar system objects during the 2015 campaign of the High cadence Transient Survey (HiTS). We found 5740 bodies (mostly Main Belt asteroids), 1203 of which were detected in different nights and in $g'$ and $r'$. Objects
Externí odkaz:
http://arxiv.org/abs/2003.05499